SistersKylie JennerandKim Kardashian Westhave baby girls two weeks apart and are revelling in the shared experience of parenting newborns.

TheKeeping Up with the Kardashiansreality stars recently had asit-downall about motherhood for theEvening Standardas Kim, 37, conducted the wide-ranging interview with youngest sibling Kylie, 20.

While each of the KarJenner parents — including Kourtney Kardashian, Rob Kardashian and Khloé Kardashian — have all bestowed their children with meaningful names (i.e. Reign, Dream and True), Kylie told Kim that the choice of Stormi was serendipitous.

“I really don’t know how we thought of Storm. Her dad [Travis Scott] insisted it was him, but I feel like it was me. And that kind of just stuck with us,” Kylie explained. “And then I didn’t really like just Storm — I didn’t feel like that was her name. So then it became Stormi. And it just stuck. I feel like there were a lot of other names that I might have even liked better, to be honest, but I feel like Stormi picked her own name, like it was just her name.”

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And with every baby comes different parenting experiences. For the Kylie Cosmetics entrepreneur, the early stages of being a mother has been overall positive.

“I feel like it’s just been so amazing, and so much fun. I’m learning so much more about myself and life, and it’s been such a great experience,” Kylie said. “Of course, there’s hard times and stuff … even in the beginning, just not sleeping, the nights, like, baby blues … and all the ups and downs.”

“They hang out all the time. It’s crazy how fast they grow, because Chi is just, like, two weeks older, but you can tell she’s a little bit more advanced. And then, right when Stormi hits two weeks, she’s doing the same things Chi was doing, and they’re like… it’s just crazy to see them grow up together,” Kylie told Kim.

“It was so much fun [being pregnant at the same time as Khloé]. We would just experience everything together. I was a little bit ahead of her, so we were both doing it for the first time and I would just like warn her of things that happened,” Kylie said. “The amazing things that are going on, and feeling the baby for the first time. So we would talk, like, on a daily basis about everything.”

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Having only given birth to Stormi on Feb. 1, Kylie admitted that returning back to work and her other commitments, unfortunately, means leaving her daughter.

“Even when I’m here it was so hard to leave this morning. I’m like, ‘I’ll be right back, I’m so sorry, I have to leave!’ and she doesn’t even know what’s going on. I think about her all the time, anywhere I am,” the mother of one shared. “I would rather be with her or wish she can come everywhere. I can’t wait till she can come everywhere with me, because right when she’s old enough I’ll bring her everywhere.”

She's the youngest member of the world's most famous family, whose company @KylieCosmetics is set to turn her into a beauty billionaire. In this week's #ESmagazine our cover star @KylieJenner talks to her big sister @KimKardashian in an exclusive interview about fame, family, motherhood and turning her insecurities into a business empire. This is one Beauty Edition you won't want to miss. Pick up your copy this Thursday London! #ESmagazine x #KylieJenner #ESBeautyEdition @eveningstandardmagazine Editor: @Laura_Weir Photographed by: @nagi_sakai Stylist: @annatrevelyan Hair by: @andrewfitzsimons Make Up by: @makeupbyariel Beauty Director: @roseharrietbeer Arts & Entertainment Director @dee_acharya

However, Kylie’s current dedication to growing her empire is ultimately for Stormi.

“I think more about the future because of her. Every time I leave and I’m stressed about leaving her, I’m like, ‘I’m doing it for you.’ Everyone says you change completely when you become a mom, but I really feel the same, just better,” she said. “So I don’t know what really has completely changed my world, besides her, of course. But I feel like it’s only gotten better. You’re less selfish.”

The father of one, who turned 26 on Monday, travelled to Turks and Caicos with Kylie and Stormi, asource told PEOPLE.

“Kylie and Travis are doing well,” aninsider saidrecently. “They are a great family. Kylie is very in love with Travis. He is an amazing dad and loves spending time with their daughter. He has very much stepped up.”